<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- 引入Vue -->
    <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
    <!-- 准备一个容器 -->
    <div id="root">
        <!-- 遍历数组 -->
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model='keyWord'>
        <button @click="sortType=2">年龄升序</button>
        <button @click="sortType=1">年龄降序</button>
        <button @click="sortType=0">原顺序</button>
        <ul>
            <li v-for="(p,index) of filPersonArr" :key="p.id">{{p.name}}-{{p.age}}-{{p.gender}}<input type="text"></li>
        </ul>
    </div>
</body>
<script type="text/javascript">
    Vue.config.productionTip = false; //阻止vue在启动时产生产提示

    let vm = new Vue({
        el: '#root',
        data() {
            return {
                keyWord: '',
                sortType: 0,//0是原顺序 1是降序 2是升序
                personArr: [
                    { id: '001', name: '马冬梅', age: 18, gender: '女' },
                    { id: '002', name: '周冬雨', age: 19, gender: '女' },
                    { id: '003', name: '周杰伦', age: 19, gender: '男' },
                    { id: '004', name: '温兆伦', age: 20, gender: '男' },
                ]
            }
        },
        computed: {
            filPersonArr() {
                const arr = this.personArr.filter((params) => {
                    // console.log(this);//vm
                    return params.name.indexOf(this.keyWord) != -1
                })
                //判断一下是否需要排序 sort改变原数组 b-a 降 a-b 升
                if(this.sortType){
                    arr.sort((p1,p2)=>{
                        return this.sortType===1?p2.age-p1.age:p1.age-p2.age
                    })
                }
                return arr
            }
        }
    })
</script>

</html>